ISL95839HRTZ

31双PWM控制器电流监测，用于IMVP - 7 / VR12â ?? ¢处理器 Dual 31 PWM Controller with Current Monitor for IMVP-7/VR12™ CPUs

Dual 3+1 PWM Controller with Current Monitor for IMVP-7/VR12™ CPUs

The ISL95839 Pulse Width Modulation PWM controller IC provides a complete solution for IMVP-7/VR12™ compliant microprocessor and graphic processor core power supplies. It provides the control and protection for two Voltage Regulators VRs. The first VR, typical for Vcore, incorporates 2 integrated drivers and can operate in 3-, 2- or 1-phase configurations. The second VR, typical for Graphics, incorporates 1 integrated

driver. The two VRs share a serial control bus to communicate with the CPU and achieve lower cost and smaller board area compared with the two-chip approach.

Features

• Serial data bus

• Dual outputs:

\- Configurable 3-, 2- or 1-phase for the 1st output using two integrated gate drivers

\- 2nd output using an integrated gate driver

•R3™ Modulator

\- Excellent transient response

\- High light load efficiency

• 0.5% system accuracy over-temperature

• Supports multiple current sensing methods

\- Lossless inductor DCR current sensing

\- Precision resistor current sensing

• Differential remote voltage sensing

•Programmable VBOOTvoltage at start-up

• Resistor programmable IMAX, switching frequency for both outputs

• Output current monitor IMON and IMONG

• Adaptive body diode conduction time reduction

Applications

• IMVP-7/VR12 compliant computers